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On my Exchange mailbox server, I am receiving the alert: 

MSExchange Calendar Attendant\Requests Failed

Or in Solarwinds Orion:

Requests Failed (Calendar Attendant) for Exchange 2010 Mailbox Role Counters (Advanced) on *servername*

All I know is this figure should be 0 at all times. Currently I am at 2, and this is the only alert on the Exchange servers. No where I can find how to resolve this. How can I fix this?

Thank you.

SamErde
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marcwenger
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  • This is old, but the question is still relevant with new versions of Exchange Server. If anyone else experiences this, I'd ask the op if they have a value of '2' on the server's performance counters and/or if they only have a value of '2' in Orion. If only in Orion, it is likely a bug, per this Thwack post: https://thwack.solarwinds.com/thread/97997. – SamErde May 10 '19 at 15:27

2 Answers2

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How do you know for sure that this figure should be 0 at all times?

I would take a look at this technet article:

http://technet.microsoft.com/en-us/library/ff360647(v=exchg.140).aspx

It lists a variety of solutions on the bottom. Also note that this article specifies 100 as the warning threshold, not 0.

Lucky Luke
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It seems Technet has conflicting information:

Calendar Attendant Counters

The following table shows Calendar Attendant counters.

Counter Description Threshold MSExchange Calendar Attendant\Requests Failed Shows the total number of failures that occurred while the Calendar Attendant was processing events. Should be 0 at all times.

AJSTL
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